Learn More About Our Practice

Dr. Diederich and Dr. Chan would like to personally invite you to explore what makes our practice unique and special.


Welcome to the office of Gregory Diederich, DDS and Marvin Chan, DMD. Here, our team understands that dental health is not just about the whitest smiles. We strive to deliver outstanding care that enables our patients to maintain their optimum oral health for their entire life, resulting in total patient health.

Our mission is to help our patients accomplish these goals through the highest quality of compassionate dental care while utilizing the latest in dental technology. With experience and expertise ranging from basic dental care to advanced restorative solutions, we offer our patients comprehensive care encompassing all the dental specialties.

Meet the Doctors

Dr. Marvin Chan, Dmd, AFAAID, FICOI

Dr. Chan’s passion for dentistry began in high school working as a dental assistant. In 2013, he received his DMD degree from Western University of Health Sciences in California. After graduation, Dr. Chan moved to Ohio and has been practicing here since. His training in oral implantology allowed him to place and restore all types of implants. With continued study in the field, Dr. Chan achieved Associate Fellow status in the American Academy of Implant Dentistry, the only organization in the country that grants credentials based on written and oral examination. As one of 750 dentists who hold this distinguished credentials, Dr. Chan is one of the leading experts in implant care. Dr. Chan has also received Fellow status with the ICOI in recognition of his expertise and clinical acumen. ICOI is the world’s largest dental implant organization and the world’s largest provider of dental implant education. He is passionate and committed to helping all patients achieve optimum oral health, while meticulously crafting beautiful and natural-looking smiles.

While not at the office, Dr. Chan enjoys family time with his wife and toddler son, watching basketball games and being a foodie. He is also an active participant in helping the underserve community.


  • American Academy of Implant Dentistry (Associate Fellow)
  • International Congress of Oral Implantologists (Fellow)
  • American Dental Association
  • Ohio Dental Association
  • The Greater Cleveland Dental Association

Dr. Gregory Diederich, DDS

Dr. Gregory Diederich has retired after many years of providing quality dental care in Sheffield, OH.

We wish him well in his future endeavors and are proud to continue his legacy of excellent dentistry.


Tensele, Hygienist

Tensele is a Registered Dental Hygienist (RDH) and a graduate of Lorain County Community College. She joined our team in 2020 and enjoys educating and caring for the needs of our patients. Tensele loves that our office is a family friendly environment, that the needs of each patient are valued, and that we strive to give the best quality care. Tensele’s goal is to continue to develop her knowledge and skills as a hygienist so she can continue to provide the best care.

Tensele is a proud mother of two! Her daughter Kiara is a graduate of Kent State University and her son Daryl is currently a Junior at the University of Akron. When not in the office, she enjoys spending time with family, friends, and traveling.

Chelsea, Hygienist

Chelsea is graduate of Amherst Steele High School. Shortly after, she joined the United States Air Force and was a Dental Assistant for six years while stationed in Italy. Chelsea is a mother of two! Meelah and Clayton, and they are her entire world. When she is not working, she enjoys spending time going on fun adventures with her children, enjoying time with her family, going to concerts and sporting events, playing softball, and traveling.

Chelsea graduated from Lorain County Community College as a Registered Dental Hygienist (RDH). She joined our team in 2021 and is excited to share her knowledge and skills with all our patients. Chelsea enjoys building the patient/provider relationship and is eager to gain your trust and help you lead a healthier life. She loves that we are a family friendly patient driven office and is excited to be a part of our team.

Our patients say

"I love Dr. Chan! He is very kind and listens to your concerns. He up to date on all the new technology! The entire staff are friendly and knowledgeable. They Provide some the best customer service I have encountered. I would highly recommend them for all your dental needs."

"So incredibly thrilled with my new smile! Felt so comfortable in every step it took to get here. Dr Chan is so down to earth and truly values your opinion. Would give 6 stars if I could! The entire office staff is incredible!"

I’ve gone to Dr. Diedrich (who is fantastic) my whole life, and I am beyond impressed with Dr. Chan, who is now leading the practice. Dr. Chan is professional, knowledgeable, and goes the extra mile for his patients. He quickly diagnosed my abscess and TMJ, as well as referred me to an excellent endodontist. He also scheduled my dental implant and abscess treatment during the busy holiday season with very short notice.
The quality of care is unmatched.

Dr Chen provided an amazing service extracting two impacted wisdom teeth! He is personal, patient friendly, and very qualified. I would indeed recommend him to others!

Dr. Chan is incredibly skilled doctor. He did a great job placing implants on my mother. I trust his expertise and his staff is very helpful through the whole process.

Our Difference

Investing in Quality Care

Advanced Restorative Solutions is a full service dental office that can provide everything from the most basic dental services to complex treatment plans. Whether a basic dental cleaning is needed or a missing tooth restored with a dental implant, we can provide the services you require. We are a progressive dental team who continually invests in continuing education and proven technology to bring you the very best that advanced dentistry has to offer.

Want to schedule an appointment?